Two Pack 24 Volt Transformer 40 VA Plug In With PTC Fuse AC Transformer For Ring Doorbell And Thermostats Compatible With Nest Ecobee Sensi Honeywell 24V Adapter No Screw Holes No Hassle

Two-Pack 24V 40VA Plug-In Transformer for Doorbells
✔️ 24V 40VA output, PTC fuse, UL listed, plug-in install

This 24V transformer delivers 40VA of steady power to doorbells and thermostats. It plugs into a standard outlet, replacing underpowered adapters and powering devices like Ring doorbells and common thermostats from Nest, Ecobee, Sensi, and Honeywell. This two-pack ships ready for immediate use with no wiring required.

✅ Input 120 VAC, 60 Hz; Output 24 VAC, 40 VA; plug-in transformer
✅ Auto resetting PTC fuse on the secondary for safe, reliable power
✅ LED green power indicator confirms operation
✅ UL Certified with outlet mounting tab for easy install
✅ Compatible with Ring doorbells and major thermostats (Nest, Ecobee, Sensi, Honeywell)
✅ Important notes: power must be disconnected during installation; resistor is not insulated; if charging a doorbell, add a 50W resistor 25Ω
✅ Pack size: 2 transformers per order

💡 What is a 24V plug-in transformer used for?

This handy device powers doorbells and thermostats with a steady 24V supply. - handy for doorbells and thermostats needing constant 24V power - simple plug-in design avoids complex wiring - UL-certified safety with auto-reset PTC fuse - compatible with Ring, Nest, Ecobee, Sensi, Honeywell devices